I've got the V2 myself. It really is an awesome piece of equipment. Will take an ego head - clearo or otherwise without an adapter. If I use a clearo on mine, I carefully screw the clearo down, leaving it very slightly loose - not only to protect the vamos threads, but also to give a little airway. My favourite has to be my 3.5ml vivi novas full of 15mg cappuccino, vaping at 7.5watts